Recent Developments of Electrical Drives - Part 40 pot
Recent Developments of Electrical Drives - Part 40 pot
... the effective value of the e.m.f. using a full-pitch winding. The result will be
also an increase of the harmonic content of the e.m.f.
The ideal e.m.f. waveform is an 120 electrical degrees trapezoidal ... control of thegenerator,
Grid
Power
Converter
Figure 1. Direct-drive wind turbine system with PM synchronous generator.
Figure 2. Generator’s topology.
Figure 3. The back-to-back...
Recent Developments of Electrical Drives - Part 1 potx
... is available from the Library of Congress.
ISBN-10 1-4 02 0-4 53 4-4 (HB)
ISBN-13 97 8-1 -4 02 0-4 53 4-9 (HB)
ISBN-10 1-4 02 0-4 53 5-2 (e-book)
ISBN-13 97 8-1 -4 02 0-4 53 5-6 (e-book)
Published by Springer,
P.O. ... 83
v
Recent Developments
of Electrical Drives
Best papers from the International Conference
on Electrical Machines ICEM’04
Edited by
S. Wi...
Recent Developments of Electrical Drives - Part 15 pot
... presented a view of one of these motors.
I-12. Optimization of Linear Brushless DC Motor Drive 135
-0 .01 -0 .008 -0 .006 -0 .004 -0 .002 0 0.002 0.004 0.006 0.008 0.01
-8
-6
-4
-2
0
2
4
6
8
x 10
-3
Figure ... efficiency is about 50% if it is assumed that the joule losses are predominant.
-1 -0 .5 0 0.5 1
-1
-0 .8
-0 .6
-0 .4
-0 .2
0
0...
Recent Developments of Electrical Drives - Part 16 potx
... (eds.), Recent Developments of Electrical Drives, 141–153.
C
2006 Springer.
II-1. High-Frequency Position Estimators 143
Figure 1. Magnetizing characteristicwith i
mo
and φ
mo
the average modulusof ... and Ren´e K. Boel
Electrical Energy Laboratory (EELAB), Department of Electrical Energy, Systems and Automation
(EESA), Ghent University (UGent), Sint-Pietersnieuwstraat 41, B-...
Recent Developments of Electrical Drives - Part 19 pot
... torque-speed en-
velope with maximum-torque-per-stator-current operation range below the base speed as well as
constant-powerflux-weakening andmaximum-torque-per-stator-flux operationregions above thebase
speed. ... fol-
lows. In “IPMSM Design for Wide-Speed Operation,” the double-layer IPM-rotor de-
sign is adopted for IPMSMs requiring a wide torque-speed envelope. In “DTC of VSI-
fed IPMSM...
Recent Developments of Electrical Drives - Part 22 pot
... location of the maximal tooth excitation de-
pends on the direction of rotation. In case of right-hand rotation the highest excitation
S. Wiak, M. Dems, K. Kom
˛
eza (eds.), Recent Developments of Electrical ... II-7. COMPARISON OF STATOR- AND
ROTOR-FORCE EXCITATION FOR THE
ACOUSTIC SIMULATION OF AN
INDUCTION MACHINE WITH
SQUIRREL-CAGE ROTOR
C. Schlensok and G. Henneberger
I...
Recent Developments of Electrical Drives - Part 23 pot
... excitations
Type of excitation Rotational direction
Stator-teeth Left-hand
Rotor-teeth Right-hand
Stator-teeth Right-hand
Rotor- and stator-teeth Right-hand
values are positioned on the side of the mounting-plate. ... Deformation of the entire machine in the case of pure stator-teeth excitation, real part.
II-7. Comparison of Stator- and Rotor-Force Excitation 221
Figure 14. Struc...
Recent Developments of Electrical Drives - Part 25 pot
... 2,280
2-3 D x 2,808 x 2, 740
3-2 D 6,208 6,169 6,395 6,280
3-3 D x 7,155 x 6,930
Cyl 2
2-2 D 756 824 799 742.6
2-3 D x 1,454 x 1,350
3-2 D 2,102 2,295 1,899 2,060
3-3 D x 3,752 x 3,470
4-2 D 3, 940 4,301 ... results: modes 2-2 D, 3-2 D, 4-2 D and modes 2-3 D, 3-3 D, 4-3 D.
Table 4. Results for the sleek cylinders
Natural frequencies (Hz)
Mode Analytical la...
Recent Developments of Electrical Drives - Part 33 potx
... range of airgap flux control to reduce or increase its value, this is made with low
requirement of d-axis current.
r
This particular configuration allows us to control the level of excitation of the ... made over iron mostly.
S. Wiak, M. Dems, K. Kom
˛
eza (eds.), Recent Developments of Electrical Drives, 321–334.
C
2006 Springer.
III-1.3. Axial Flux Surface Mounted PM Machin...
Recent Developments of Electrical Drives - Part 37 pot
... Kom
˛
eza (eds.), Recent Developments of Electrical Drives, 361–373.
C
2006 Springer.
III-2.1. Performance Analysis of DFTSCIG 363
Therefore,the mechanical frequencyof the shaft of the machineinhertz ... development of
several alternatives of gearless electrical generators that operate at variable speeds. One
of these alternatives consists of a Doubly Fed Twin stator...
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